<html lang="en"  xmlns:th="http://www.thymeleaf.org"
      xmlns:layout="http://www.ultraq.net.nz/web/thymeleaf/layout">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
    <!--引入-->
    <div th:include="fragment/fheader.html :: fheader"></div>
    <!--加入左边-->
    <div th:include="fragment/fleft.html :: fmenu">left</div>
    <!--定义-->
    <div layout:fragment="fcontent">中间</div>
    <!--引入-->
    <div th:include="fragment/ffooter.html :: ffooter"></div>
</div>
</body>
</html>